Perhaps you should try some spelling variations:
"modified dfmplexity approximation algorithms" » "modified complexity approximation algorithms", "modified _mplexity approximation algorithms", "modified adammplexity approximation algorithms", "modified bi1mplexity approximation algorithms"
"modified df evolution algorithm" » "modified df solution algorithm", "modified df evolutionary algorithm", "modified df convolution algorithms", "modified _ evolution algorithm", "modified co evolution algorithm", "modified adam evolution algorithm", "modified bi1 evolution algorithm"

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